But when and by whom was the formula of Baptism thus amplified?--During the Medieval Ages the Apostles' Creed was commonly known as "The Twelve Articles," because it was generally believed that the twelve apostles, assembled in joint session before they were separated, soon after Pentecost drafted this Creed, each contributing a clause. But, though retained in the Catechismus Romanus, this is a legend which originated in Italy or Gaul in the sixth or seventh (according to Zahn, toward the end of the fourth) century and was unknown before this date. Yet, though it may seem more probable that the Apostles' Creed was the result of a silent growth and very gradual formation corresponding to the ever-changing environments and needs of the Christian congregations, especially over against the heretics, there is no sufficient reason why the apostles themselves should not have been instrumental in its formulation, nor why, with the exception of a number of minor later additions its original form should not have been essentially what it is to-day. Nathanael confessed: "Rabbi, Thou art the Son of God; Thou art the King of Israel," John 1, 49, the apostles confessed: "Thou art the Christ, the Son of the living God," Matt. 16, 16; Peter confessed: "We believe and are sure that Thou art that Christ, the Son of the living God," John 6, 69; Thomas confessed: "My Lord and my God," John 20, 28. These and similar confessions of the truth concerning Himself were not merely approved of, but solicited and demanded by, Christ. For He declares most solemnly: "Whosoever therefore shall confess Me before men, him will I confess also before My Father which is in heaven. But whosoever shall deny Me before men, him will I also deny before My Father which is in heaven," Matt. 10, 32. 33. The same duty of confessing their faith, _i.e._, the truths concerning Christ, is enjoined upon all Christians by the Apostle Paul when he writes: "If thou shalt confess with thy mouth the Lord Jesus and shalt believe in thine heart that God hath raised Him from the dead, thou shalt be saved," Rom. 10, 9. In the light of these and similar passages, the trinitarian baptismal formula prescribed by Christ evidently required from the candidate for Baptism a definite statement of what he believed concerning the Father, Son and Holy Ghost, especially concerning Jesus Christ the Savior. And that such a confession of faith was in vogue even in the days of the apostles appears from the Bible itself. Of Timothy it is said that he had "professed a good profession before many witnesses," 1 Tim. 6, 12. Heb. 4, 14 we read: "Let us hold fast our profession." Heb. 10, 23: "Let us hold fast the profession of our faith without wavering." Jude urges the Christians that they "should earnestly contend for the faith which was once delivered unto the saints," and build up themselves on their "most holy faith," Jude 3. 20. Compare also 1 Cor. 15, 3. 4; 1 Tim. 3, 16; Titus 1, 13; 3, 4-7.